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Localization Manager

Proton· CC - Localization
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Hybrid (London)full-timePosted 3w ago

About the role

Localization team ensures Proton works and sells in every market, owning how product launches and growth content reach people in their own language and culture across in-app strings, pricing pages, CRM emails, app store listings, and marketing materials.

Responsibilities

  • Own the lifecycle for your portfolio. From string freeze to general availability — initiation, planning, execution, closure. Coordinate Product, Design, Engineering, Marketing and Support against fixed release dates, and determine if a locale is ready to ship.
  • Run the machine. Administer our TMS and CAT workflows, maintain assets for repeatable launches (scoping models, timelines, locale-readiness checklists, go/no-go criteria).
  • Keep your spend on track. Own budget for your corner, track translation costs per product and per language, reconcile monthly, flag drift.
  • Build and manage the vendor bench. Recruit, pre-qualify and test suppliers/freelancers; maintain SLAs/NDAs/docs; track quality and turnaround; conduct quarterly business reviews; escalate as needed.
  • Ensure adaptation, not transliteration. Localize growth-facing content for markets; brief/review adaptations, flag cultural/regulatory risks; own template internationalization and content logic for lifecycle emails if applicable.
  • Be the reference point. Act as linguistic and internationalization contact for stakeholders; drive retrospectives and corrective-action reports; occasional proof of concept.
  • Ship experiments, then measure them. Collaborate with CRO team on localized variants; frame localization hypotheses; interpret results within growth experiments; segment funnel data by locale to identify language/culture impacts on conversions.

Qualifications

  • Owned localization projects or programs end-to-end, including multi-workstream, multi-market launches with fixed dates.
  • Proficient in English daily (B2–C2) and native or professional proficiency in at least one other language.
  • Hands-on administration of TMS and CAT tools; strong knowledge of localization best practices and internationalization standards.
  • Experience managing vendors/freelancers against quality, turnaround and cost targets; vigilant on spend trends.
  • Comfortable with operational data: defining metrics, monitoring them, and influencing behavior based on data.

Skills

Required:Localization program managementTMS and CAT toolingVendor & budget managementLocalization quality & internationalization standardsCross-functional collaboration
Nice to have:Data-driven decision making

Benefits

  • Work that Matters: focus on users and privacy.
  • A great team with diverse backgrounds.
  • Technology infrastructure for productivity.
  • Learning & Development opportunities.
  • Employee benefits including health coverage, retirement options, leave and wellness support.
  • Stock options from day one.
  • In-person collaboration across multiple offices (Geneva, Zürich, Barcelona, London, etc.).
  • Food: lunch and snacks in office.
  • Transport support (public transport, bike allowance, or parking).
  • Flexible working with outcomes-focused culture.
Last updated Oct 1, 2026. Interested? Apply on the company site.

About Proton

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Proton was started in 2014 by scientists who met at CERN and shared a vision of an internet that defends freedom and puts people first.

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